Eazi-BrEEdTM CIDR® Cattle Insert for Induction of Estrous Cycles in Anestrous Lactating Dairy Cows
نویسنده
چکیده
Though conception rates within 2 weeks of Eazi-BrEEd CIDR removal were lower for treated cows (27.7% vs 36.2% for controls, P < 0.083), overall pregnancy rates did not differ between treatment groups (P = 0.32). [Conception can be reduced by: 1) an older, unknown-aged egg being ovulated after an extended progesterone period; 2) vaginitis, so cleanliness and proper insertion technique are important factors.]
منابع مشابه
The Effect of GnRH vs No-GnRH at the Initiation of a 7-d CIDR Synchronization Treatment on AI Pregnancy Rates in Postpartum Lactating Angus and Bos indicus x Bos taurus Cows1,2
Bos indicus x Bos taurus (n=251) and Angus (n=323) cows received a progesterone containing device called an Eazi-BreedTM CIDR® for 7 d with a prostaglandinF2a (PGF2a) injection at CIDR removal. At CIDR insertion half the cows received a GnRH injection and half did not. Upon CIDR removal, half the cows in both GnRH and No-GnRH groups were equally divided into two AI treatment groups: 1) injectio...
متن کاملComparison of Two CIDR Synchronization and AI Treatments in Postpartum Lactating Bos indicus X Bos taurus Cows1,2
On d 0 of the experiment Bos indicus x Bos taurus (n=130) cows received an injection of GnRH and a progesterone-releasing device called an Eazi-BreedTM CIDR® for 7 d with a prostaglandin F2a injection at CIDR removal. Upon CIDR removal cows were divided into two AI treatments: 1) injection of estradiol cypionate (ECP) 24 h after CIDR removal with AI 8 to 10 h after a detected estrus and timed-A...
متن کاملProduction, Management and the Environment: Reproduction and Health Management
The objective was to evaluate whether addition of EAZI-BREED CIDR Cattle Inserts (CIDR) to the Ovsynch program increases first service pregnancy rate (PR) in lactating dairy cows. The study was conducted in 5 dairies in Central Mexico. Cows were inseminated from June through September, 2001. Within trial site and within parity, cows were assigned to either an Ovsynch (n=255) or an Ovsynch-CIDR ...
متن کاملEstrous behavior and initiation of estrous cycles in postpartum Brahman-influenced cows after treatment with progesterone and prostaglandin F2alpha.
Spring-calving, crossbred (1/4 to 3/8 Brahman) primiparous (n = 56) and multiparous (n = 102) beef cows were used to evaluate the effects of progesterone, delivered via a controlled internal drug-releasing (CIDR) device, and prostaglandin F(2alpha) (PGF(2alpha)) on estrous behavior, synchronization rate, initiation of estrous cycles, and pregnancy rate during a 2-yr period. To determine luteal ...
متن کاملEstrous behavior and initiation of estrous cycles in postpartum Brahman- influenced cows after treatment with progesterone and prostaglandin F2α
Spring-calving, crossbred (1/4 to 3/8 Brahman) primiparous (n = 56) and multiparous (n = 102) beef cows were used to evaluate the effects of progesterone, delivered via a controlled internal drug-releasing (CIDR) device, and prostaglandin F2α (PGF2α) on estrous behavior, synchronization rate, initiation of estrous cycles, and pregnancy rate during a 2-yr period. To determine luteal activity, we...
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تاریخ انتشار 2015